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CVE-2021-24278— Redirection for Contact Form 7 < 2.3.4 - Unauthenticated Arbitrary Nonce Generation

Quick assessment

Affected
Query Solutions Redirection for Contact Form 7
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress是Wordpress基金会的一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress 插件是WordPress开源的一个应用插件。 Contact Form 7 WordPress plugin 2.3.4之前版本存在安全漏洞，该漏洞允许未经过身份验证的用户可以使用wpcf7r get nonce AJAX动作来检索任何WordPress动作函数的有效nonce。

AI Predicted 7.5 Difficulty: Easy EPSS 7.36% · P94

Public Exploits 1

Nuclei · 1 CVE-2021-24278.yaml [template]
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I. Basic Information for CVE-2021-24278

Vulnerability Information
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Vulnerability Title
Redirection for Contact Form 7 < 2.3.4 - Unauthenticated Arbitrary Nonce Generation
Source: CVE Program / CVE List V5
Vulnerability Description
In the Redirection for Contact Form 7 WordPress plugin before 2.3.4, unauthenticated users can use the wpcf7r_get_nonce AJAX action to retrieve a valid nonce for any WordPress action/function.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress是Wordpress基金会的一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress 插件是WordPress开源的一个应用插件。 Contact Form 7 WordPress plugin 2.3.4之前版本存在安全漏洞，该漏洞允许未经过身份验证的用户可以使用wpcf7r get nonce AJAX动作来检索任何WordPress动作函数的有效nonce。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Query Solutions Redirection for Contact Form 7 2.3.4 ~ 2.3.4 -

II. Public POCs for CVE-2021-24278

# POC Description Source Link Shenlong Link
1 WordPress Contact Form 7 before version 2.3.4 allows unauthenticated users to use the wpcf7r_get_nonce AJAX action to retrieve a valid nonce for any WordPress action/function. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-24278.yaml POC Details
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III. Intelligence Information for CVE-2021-24278

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Vendor Advisories for CVE-2021-24278 (2)

Same Patch Batch · Query Solutions · 2021-05-14 · 5 CVEs total

CVE-2021-24279 Redirection for Contact Form 7 < 2.3.4 - Authenticated Arbitrary Plugin Installation
CVE-2021-24280 Redirection for Contact Form 7 < 2.3.4 - Authenticated PHP Object Injection
CVE-2021-24281 Redirection for Contact Form 7 < 2.3.4 - Authenticated Arbitrary Post Deletion
CVE-2021-24282 Redirection for Contact Form 7 < 2.3.4 - Unprotected AJAX Actions

IV. Related Vulnerabilities

Same product: Redirection for Contact Form 7
Same vendor: Query Solutions
Same weakness: CWE-863

V. Comments for CVE-2021-24278

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